Commuters who missed the upscale breakfast-and-lunch options at Juniper Grille can take comfort in Carnegie Kitchen, which seems to have picked up where that diner left off. Chef-owner Jeff Uniatowski, formerly of Mise and House of Blue, crafts a value-driven menu with broad appeal. Contemporary versions of diner classics like steak and eggs, corned beef hash and bagels and lox give way to chopped salads, mile-high Reubens, and grilled-salmon sandwiches.